Fluid-pressure regulator



April 14, 1931. "F. GAUNT ET AL FLUID PRESSURE REGULATOR Filed Oct. 2l, 1927 olds ughes,

r/ Minn m s S A mwa@ n A @.Wsmwr w Wr www LN :Ww .QN N uw \\e\\ www. ,.v \Nm L@ E 4,. l NM Patented Apr. 14, i931 intatti @ENCE FLOYD GAUNTyMVYRON B. REYNOLDS, AND RALPH C. HUGHES, F ANDERSON, INDIANA,

ASSGNORS T0 REYNOLDS REGULATOR COMANY CORPORATION OF INDIANA FLUID-PRESSURE REGULATOR Application filed ctober 21, 1927. Serial No. 227,648.

Our invention relates to improvements in pressure regulators and particularly to that type of regulator for maintaining a uniform pressure in gas service pipes irrespective of the fluctuations of pressure in the supply mains.

It is one of the objects of our invention to provide a regulator of the above type wherein the blow-off will be ellectually sealed under normal conditions but which will respond readily to abnormal increase in pressure and will maintain the release condition of the regulator until the pressure has been properly restored. i

Another object of our invention is to provide a means for eectually seating the intake .valve of the regulator. ther objects and advantages will appear more fully hereinafter.

For the purpose of disclosing our invention- Fig. 1 is a vertical sectional view of a regulator embodying' our invention;

Fig. 2 is a perspective view of the blow-of sealing cup Fig. 3 is a perspective view of the valve lever mounting device;

Fig. l is a sectional view of the intake valve seat, and

Figs. 5 and 6 are sectional views of modi fications thereof. Y

ln the structure illustrated the pressure regulator includes a regulator casing having a body portion 1 and a cover 2Vdetachably connected thereto. A flexiblediaphragm 3 is clamped between the body 1 and the cover 2 and is held upwardly by the pressure of the gas on the lower side thereof and against the resistance of a spring Ll, the tension of which be adjusted by a set screw 5.

To the lower side of the diaphragm 3 there is attached one end of a lever 6 pivoted at 7 on a pivot support 8. rlrhis pivot support is formed of stamped sheet metal comprising a blank slotted from its opposite ends by parallel slots toward the interior, the slots however, not ent-ending clear to the inner portion of the stamping. There is thus provided a pair of tongues 9 9 which may be 5 turned downwardly at right ,alglGS l50 the body portion of the support leaving supporting ears lO-lO. The supporting ears provide means for clamping the support in position between the top 2 and the body 1 at the narrowed neck portion of the body, the body being notched out at the mounting point of the support to accommodate these ears. rl`he down turned ears 9 provide forks in which the pivot 'l' is mounted in suitable openings 11 and between which the lever 6 is positioned. rlhis particular construction of this pivot member has desirable advantages as it permits of avery nice adjustment of the parts and extreme accuracy in assembling without excessive labor in the grinding and finishing of the supports, as has heretofore been the case.

The end of the lever adapted to be attached to the diaphragm is provided on its under face with a notch 12 adapted to receive a cross pin 13 on which this end of the lever rests, between ears 111, depending from the diaphragm plate 15. y

'lhe body portion of the regulator is provided with a release opening having an ei:- tended tube 16 terminating in a well l?. En closing the open end of this tube 16 is a movable mercury well or cup 18, having its bottom convexed as at 19 and provided at its upper end with out-turned ears or lugs 20a, which guide the cup in its vertical movements in the well 17. rThe cup is normally held with the con' ered bottom portion seated against the bottom of the tube 16, which bottom portion is immersed in mercury contained in the cup. By this construction a minimum quantity of mercury for sealing the blow-off opening is required. rlhe bottom 19 substantially closes the open end of the tube 1G and the small quantity of mercury need be only suliicient to seal the junction against leaks. 1n event the pressure in the regulator builds up above the desired predetermined point, this pressure acting against the mercury in the tube 16 ant the bottom of the cup will force the bottom 19 olf its seat permitting the pressure to escape through the tube 16 in a blowb rhis forces the mercury up in the cup and in some instances it will even overflow the top of the cup. As soon as the OF ANDEBSGN, NDANA, A

v tiallyknife edge, lseats for the'leather face 25.

Y. -sheet metal fthe .parts may be made much Y flowing back around the exterior of the tubeV pressure drops as a result of the blow-off,

the spring 20will reseat the cup bottomv 19 on the bottom of the tube 16 and the mercury 16 will preventy excessive leakage of the gas pending the resealing 'of the tube by the placingrofthemercury vwithin the tube.

While we have spoken of mercury as the -sealing'mediuim in the cup'lS, it. will be of VKcourse .understoodthat othercsealing mediums may be used, such for instance as; oil or other liquid.v

The end of tlie lever 6, opposite to that securedto the diaphragm, projects into a;l reduced lateral extension 21, which forms a valve housing, the top of which has a thread- -ed outlet opening 22. This end of they lever I lplug is vprovided withan annular groove 28 tapered toward 'its bottomfandforming a pair of concentric knife edge, or substan- 'In the structure illustrated in Fig. fthe double Aconcentric, knife edge seat `is 'formed I Vbymtapering theupper edge 29 of the seat from a shoulder 30 up, and securing around said shouldera ring 3l having its upper pol tion 32 tapered, the two port-ions. thus forining the annular channel 28. y -V In the structure illustrated in Fig. 6 the ring 31 `is seated vwithin the plug instead of' Y surrounding the same, thesame effect, however, being. obtained..

v lt 'should be noted that the lever Gis formed of stamped sheet metal having Vthe two side flanges 32 thrown down to give'rigidity and having` the walls of the-openingforY the pin `-21l1throwndown as at 35, which-gives a survface to formthe screw threads for the reception of the threaded vpin 24; By the formingV of the support 34 and the lever 6 from stamped lighter and much more accurate than Ahas Vheretofore'been the case` where such-parts hw'leen cast. n Y l i We Claim 21S Our invention:

1`. A pressure regulator', having a blow-o., tube', a sealingy cup surrounding the open end of .said tube' and axially movable'relatively thereto, aisealing fluid contained `with i ii said' Cup and meansfor biasing said cup toward v a closed position.`

ing a convex bottom cro-operating V.with the end of said tube for sealing the same, said cup beingV adapted to contain' a sealing fluid and means for biasing said cup in its closed position. Y i

3.*,A device of the'kinddescribed comprising an inner'cup to contain a Huid seal detachably mounted upon the vent outlet or stem o'f a gas regulator or the like so that said stem-projectsfdirectly into the -iiuidlseah and an outer cup concentricV with andsurrounding andv coactingjwith the inner cup to catchthe seal fluid overflowing the'upper open-end ofthe inner cup.

4;. In a Adevice of tliekind described, an inner mercury cup, means for temporarily and 'detachab-ly m-ountingsaid inner cup upon the vent'outlet or stem of a gas regulator or the like, and an outer cup., substantially surrounding and coacting with the inner cup to normally maintainsaid inner cup, in position and catch any mercury overflowing from the inner cup. Y Y .g f 5. combination with a gas regulator including a vent outlet or stem, an innercup removably Vmounted thereon, a. sealing fluid in said inner cup, and an outer cup-` detachably connected to the regulator and `coacting with said innerV cup to normally hold the latter in place'and to catch any portion of the seal fluid overflowing fromsaid inner v6. A pressure regulator having a blow-off tube, a sealing cup surrounding'the openV end of said tubeand axially movable relatively thereto, asealing fluid containedlwithin said cup, means for'urging said'cup toward a closed position and an outer c up immovably but detachably connectedv to lthe regulator about said movable cup; and coacting with the latter to catch any portion of the sealing fluid loverflowing fromsaid movable cup. i

y 7. A device of the kind described comprisl ing a sealing-cup to Vcon'tainza fluid seal and axially movable upon the ventoutlet or stem of 1a gas'regulator orthe like so thatsaid stem projects into the fiuid seal, and an Vouter cup immovablyY but detachabl'y, connected to i the regulator concentric withand; surrounding and coactin ywith the lmovable cup to catch 'the sealI uidoverflowing; theupper open end ofthe movable cup. Y

8.l A pressure Vregulator having a Y tube, aV sealing cup, surrounding saidftube and axially *movable relatively thereto and having a convex.bottom'cooperating l.with the end of said tube-for sealing. theV sanie,s,aid cup being adapted to contain'asealing fluid, spring yineaiisg normally. pressing.y upwardly against said cup bottomv for urging the latter toward a closed Y position, and an vouter lcup l .v immovablybutdetachably'connected to the V2. A pressureregulator having a'blow-off tube, asealing` cup sur-rounding -said tube .Y axially'movablerelativelythereto and havregulator about said movable cup and coacting, with the latter to. catch' any portion'of the lsealing fluid overflowing `froin saidmovablecup. I i l FLOYD GAUNT. MYRON B. REYNOLDS. RALPH C. HUGHES. 

